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    <title>Document</title>
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<body>
    <script type="text/javascript">
        // 1.将数组map，filter，reduce，every改写成箭头函数形式

const arr = [1, 2, 3, 4, 5, 6]

        // const arr1 = arr.map(
        //     function (element) {
        //         return element + 1
        //     }
        // )
            const arr1=arr.map(Element=>Element+1)
            console.log(arr1);
 // const new_arr = arr.filter(
        //     function (e){
        //         return e%2==0  //true：返回 false：不符合条件=>过滤
        //     }
        // )
        const arr2=arr.filter(Element=>Element%2==0)
            console.log(arr2);
 // var sum = arr.reduceRight(
        //     function (v1,v2){
        //         return v1*v2
        //     }
        // )
        const arr3=arr.reduceRight((Element1,Element2)=>Element1*Element2)
            console.log(arr3);
// var isMatch = arr.every(
        //     function (e){
        //         return e>1
        //     }
        // )
        const arr4=arr.every(Element=>Element>1)
            console.log(arr4);
    </script>
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